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Swine interferon-inducible transmembrane proteins potently inhibit influenza A virus replication.

ABSTRACT: Human interferon-inducible transmembrane proteins (IFITMs) were identified as restriction factors of influenza A virus (IAV). Given the important role of pigs in the zoonotic cycle of IAV, we cloned swine IFITMs (swIFITMs) and found two IFITM1-like proteins, one homologue of IFITM2, and a homologue of IFITM3. We show that swIFITM2 and swIFITM3 localize to endosomes and display potent antiviral activities. Knockdown of swIFITMs strongly reduced virus inhibition by interferon, establishing the swIFITMs as potent restriction factors in porcine cells.

SUBMITTER: Lanz C 

PROVIDER: S-EPMC4301123 | biostudies-other | 2015 Jan

REPOSITORIES: biostudies-other

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Swine interferon-inducible transmembrane proteins potently inhibit influenza A virus replication.

Lanz Caroline C   Yángüez Emilio E   Andenmatten Dario D   Stertz Silke S  

Journal of virology 20141015 1

Human interferon-inducible transmembrane proteins (IFITMs) were identified as restriction factors of influenza A virus (IAV). Given the important role of pigs in the zoonotic cycle of IAV, we cloned swine IFITMs (swIFITMs) and found two IFITM1-like proteins, one homologue of IFITM2, and a homologue of IFITM3. We show that swIFITM2 and swIFITM3 localize to endosomes and display potent antiviral activities. Knockdown of swIFITMs strongly reduced virus inhibition by interferon, establishing the swI  ...[more]

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